Table of Contents
Advertisement
SECTION MITL9103-098-180-NA
TABLE 10-3
NUMBER
O F
PULSES
TRANSLATlON
CODE
TABLE 10-4
STATlON LOOP
LENGTH
VS WIRE GAUGE
WIRE GAUGE
STATION LOOP
LENGTH
1
DIGIT DIALED
1
2
3
4
5
6
7
8
9
0
CO Trunk Resistance
-
In the idle state
the resistance towards the C O from the
trunk circuit is not less
that
30 kohrns for
ground
start,
and not less than 10 Mohms
for loop start trunks
-
-
19
20
22
24
26
H.
TRANSMISSION
23,900
ft
(7,242 rn)
19,000
ft
(5.758 rn)
12,000 f t (3,636 m)
7,500
ft
(2,273 rn)
4,700
ft
(1,424 r n l
General
1 1 . 0 1 This section specifies the SX-5 transrnis-
sion characteristics
Transmission Characteristics
11.02 The insertion loss at 1004 Hz is as follows
Line -to -Line connection:
5
dB
2
0.5 dB
Line-to -Trunk connection:
0.5 dB
2
0.4
dB
11.03 Distortion:
The second or third harmonic
will not exceed a level of -55 d6m with a
200 or 1004 Hz signal at
-
10 d6m With an input
signal consisting of 900 Hz and 1004 Hz (each at
-1 3 a m ) , the rrns sum of all the intermodulation
products will not exceed -45
d6m when
measured at the output The equations to cal-
culate the intermodulation distortion (which are
applicable to both extension-to-extension and
extension-to-trunk)
are:
R2= 20 log10 level at 700 Hz
>
50 d6
level at 1400 Hz
-
R3= 20 log10 level at 700 Hz
>
50 dB
level at 2100 Hz
-
11.04 Overload: The change in attenuation when
the level of a 1004 Hz signal is increased
from 0 to +7 dBm will not exceed 0.1 dB.
11.05 Return Loss: The Return Loss parameters
in the talking state are:
(a) Extension-to-Extension
-
ERL>18dB
SRL
>
12 dB
(b) Extension-to-Trunk
-
ERL> 18d6
SRL
>
12
dB
11.06 Longitudinal Balance:
All connections
meet the following requirements with re-
spect to Longitudinal Balance.
Minimum
Page 19
Advertisement
Chapters
Table of Contents
